public void TestMySqrt()
{
// Arrange
var calc = new Calculator();
// Act
var sqrt = calc.MySqrt(2);
var sqrt1 = calc.MySqrt(0);
var sqrt2 = calc.MySqrt(1);
// Assert
Assert.AreEqual(4, sqrt);
Assert.AreEqual(0, sqrt1);
Assert.AreEqual(1, sqrt2);
}